[특허]OFDM frame transmission method and apparatus

[미국특허] OFDM frame transmission method and apparatus 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	H04J-001/00 H04J-003/00 H04B-007/212 H04J-011/00 H04B-007/04 H04L-027/26 H04B-007/06 H04B-007/08 H04L-005/00 H04L-025/02
출원번호	US-0770199 (2013-02-19)
등록번호	US-9083480 (2015-07-14)
우선권정보	JP-2002-206799 (2002-07-16); JP-2002-259791 (2002-09-05)
발명자 / 주소	Murakami, Yutaka Orihashi, Masayuki Matsuoka, Akihiko Nakagawa, Yoichi
출원인 / 주소	Optis Wireless Technology, LLC
대리인 / 주소	Nixon & Vanderhye P.C.
인용정보	피인용 횟수 : 2 인용 특허 : 36

초록 ▼

A transmission method includes generating a plurality of orthogonal frequency division multiplexing (OFDM) signals, each signal including different data and some of the plurality of OFDM signals including pilot symbols. The pilot symbols are assigned to a predetermined subcarrier in predetermined time. At least one of the plurality of OFDM signals is assigned the pilot symbols to the predetermined subcarrier in the predetermined time, and other OFDM signals are assigned data to the predetermined subcarrier in the predetermined time. The method further includes converting each of the plurality of OFDM signals to a radio signal and transmitting each of the radio signals from a different antenna.

대표청구항 ▼

1. A transmission method comprising: generating a plurality of orthogonal frequency division multiplexing (OFDM) frame signals, each OFDM frame signal including multiple frequency subcarriers and multiple time periods, where an OFDM symbol is transmitted using multiple frequency subcarriers during a time period;one of the OFDM frame signals including different OFDM data symbols than another of the OFDM frame signals,at least one of the plurality of OFDM frame signals including OFDM pilot symbols assigned to predetermined frequency subcarriers of the multiple frequency subcarriers at predetermined time periods of the multiple time periods, andthe other OFDM frame signal including OFDM data symbols assigned to the predetermined frequency subcarriers at the predetermined time periods;converting the OFDM frame signals to radio signals; andtransmitting each of the radio signals from a different antenna. 2. The transmission method according to claim 1, wherein the other OFDM frame signal includes OFDM pilot symbols assigned at the predetermined time periods of the multiple time periods on frequency subcarriers of the multiple frequency subcarriers that are different from the predetermined frequency subcarriers. 3. The transmission method according to claim 1, wherein at least one of the plurality of the OFDM frame signals does not include OFDM pilot symbols during the predetermined time periods. 4. A transmission apparatus comprising: data processing circuitry configured to generate a plurality of orthogonal frequency division multiplexing (OFDM) frame signals, each OFDM frame signal including multiple frequency subcarriers and multiple time periods, where an OFDM symbol is transmittable using multiple frequency subcarriers during a time period;one of the OFDM frame signals including different OFDM data symbols than another of the OFDM frame signals,at least one of the plurality of OFDM frame signals including OFDM pilot symbols assigned to predetermined frequency subcarriers of the multiple frequency subcarriers at predetermined time periods of the multiple time periods, andthe other OFDM frame signal including OFDM data symbols assigned to the predetermined frequency subcarriers at the predetermined time periods;radio circuitry configured to convert the OFDM frame signals to radio signals; anda transmitter configured to transmit each of the radio signals from a different antenna. 5. The transmission apparatus according to claim 4, wherein the other OFDM frame signal includes OFDM pilot symbols assigned at the predetermined time periods of the multiple time periods on frequency subcarriers of the multiple frequency subcarriers that are different from the predetermined frequency subcarriers. 6. The transmission apparatus according to claim 4, wherein at least one of the plurality of the OFDM frame signals does not include OFDM pilot symbols during the predetermined time periods.

이 특허에 인용된 특허 (36) 인용/피인용 타임라인 분석

Ahmad Jalali, Channel coding and interleaving for transmission on a multicarrier system.
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Murakami, Yutaka; Orihashi, Masayuki; Matsuoka, Akihiko; Nakagawa, Yoichi, Communication method, and transmitting apparatus and receiving apparatus using that communication method.
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Murakami, Yutaka; Orihashi, Masayuki; Matsuoka, Akihiko; Nakagawa, Yoichi, Communication method, and transmitting apparatus and receiving apparatus using that communication method.
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Murakami, Yutaka; Orihashi, Masayuki; Matsuoka, Akihiko; Nakagawa, Yoichi, Communication method, and transmitting apparatus and receiving apparatus using that communication method.
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Murakami, Yutaka; Orihashi, Masayuki; Matsuoka, Akihiko; Nakagawa, Yoichi, Communication method, and transmitting apparatus and receiving apparatus using that communication method.
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Murakami, Yutaka; Orihashi, Masayuki; Matsuoka, Akihiko; Nakagawa, Yoichi, Communication method, and transmitting apparatus and receiving apparatus using that communication method.
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Murakami, Yutaka; Orihashi, Masayuki; Matsuoka, Akihiko; Nakagawa, Yoichi, Communication method, and transmitting apparatus and receiving apparatus using that communication method.
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Murakami, Yutaka; Orihashi, Masayuki; Matsuoka, Akihiko; Nakagawa, Yoichi, Communication method, transmitting device using the same, and receiving device using the same.
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Hashem, Bassam M.; Steer, David G.; Periyalwar, Shalini S., Dynamic sub-carrier assignment in OFDM systems.
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Castelain, Damien, Method of transmitting data on multiple carriers from a transmitter to a receiver and receiver designed to implement the said method.
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Hayashino Hiroshi (Takarazuka JPX) Harada Yasuo (Kobe JPX) Kimura Tomohiro (Kawachinagano JPX) Uno Yasuhiro (Katano JPX) Oue Hiroshi (Neyagawa JPX), Method of transmitting orthogonal frequency division multiplex signal, and transmitter and receiver employed therefor.
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Harada Yasuo,JPX ; Kimura Tomohiro,JPX ; Oue Hiroshi,JPX ; Nagaishi Yasuo,JPX ; Hayashino Hiroshi,JPX ; Uno Yasuhiro,JPX, Method of transmitting orthogonal frequency division multiplexing signal and receiver thereof.
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Sano,Hiroyasu; Kataoka,Nobuhisa, Multi-carrier CDMA communication device, multi-carrier CDMA transmitting device, and multi-carrier CDMA receiving device.
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Humphrey, Les, Multi-carrier connection initialization and symbol transmission.
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Hwang, Jong-Yoon; Bae, Sang-Min; Heo, Jin-Woo, Multicarrier CDMA rake receiver apparatus.
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Kuwabara,Masahiro; Sawada,Manabu; Sasaki,Kunihiko, OFDM communication system and transmitter-receiver for use in the system.
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Miyoshi,Kenichi; Uesugi,Mitsuru, Radio base station apparatus and radio communication method.
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Murakami,Yutaka; Takabayashi,Shinichiro; Abe,Katsuaki; Orihashi,Masayuki; Matsuoka,Akihiko, Radio communication apparatus.
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Kogawa,Tsuyoshi; Kasami,Hideo, Radio reception apparatus and radio reception method.
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Asano, Masahiro, Transceiver capable of adaptively selecting a modulation method based on the transmission power and channel condition.
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Yang,Xiaofeng; Peters,Kevin, Wheatstone bridge scheme for sensor.
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이 특허를 인용한 특허 (2) 인용/피인용 타임라인 분석

Murakami, Yutaka; Orihashi, Masayuki; Matsuoka, Akihiko; Nakagawa, Yoichi, OFDM frame communication method and apparatus.
상세보기
Murakami, Yutaka; Orihashi, Masayuki; Matsuoka, Akihiko; Nakagawa, Yoichi, OFDM frame transmission method and apparatus.
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[미국특허] OFDM frame transmission method and apparatus 원문보기